/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.antgroup.geaflow.memory.channel;

import com.antgroup.geaflow.memory.MemoryView;
import com.antgroup.geaflow.memory.MemoryViewReader;
import java.io.IOException;
import java.io.InputStream;

public class ByteArrayInputStream extends InputStream {

    private final MemoryViewReader reader;

    public ByteArrayInputStream(MemoryView view) {
        reader = view.getReader();
    }

    @Override
    public int read() throws IOException {
        return reader.hasNext() ? reader.read() & 0xff : -1;
    }

    @Override
    public int read(byte[] b) throws IOException {
        return read(b, 0, b.length);
    }

    @Override
    public int read(byte[] b, int off, int len) throws IOException {
        return reader.read(b, off, len);
    }

    @Override
    public long skip(long n) throws IOException {
        return reader.skip(n);
    }

    @Override
    public int available() throws IOException {
        return reader.available();
    }

    @Override
    public void close() throws IOException {
        super.close();
    }

    @Override
    public synchronized void mark(int readlimit) {
        super.mark(readlimit);
    }

    @Override
    public synchronized void reset() throws IOException {
        super.reset();
    }

    @Override
    public boolean markSupported() {
        return super.markSupported();
    }
}
